Air Cooled Water Chillers. CLS 182 to to 150 kw. Technical Brochure TM CLS-W.3GB Date : October 2004 Supersedes : TM CLS-W.2GB/07.

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1 Air Cooled Water Chillers CLS 182 to to 150 kw Technical Brochure TM CLS-W.3GB Date : October 2004 Supersedes : TM CLS-W.2GB/07.04 R

2 Specifications General characteristics The CLS air cooled water chillers have been designed to operate with the HFC 407C refrigerant. They are complete with two independent refrigerant circuits fitted with a high efficiency and low vibration level Scroll compressor on each circuit. These units are suitable for outdoor installation on the roof of a building or on the ground. All the CLS units are completely factory tested in compliance with the internal quality system specifications and procedures, and are ready for field installation. The "Plug and Play" concept has been introduced in each CLS unit, thanks to the use of BMS compatible microprocessor-based control system and to the integrated hydraulic module supplied as optional on all versions of the CLS range. Also, thanks to the versions and options available, the CLS air cooled water chillers can fit all the demands of the market. The CLS range is available in 5 versions; each version is composed of 9 sizes. CLS STD : Standard version fitted with standard equipment intended for reliable operation. The CLS STD units cover a nominal cooling capacity range from 41 to 150 kw. CLS LN : Low noise version having same equipment as STD version, except that it is fitted with low speed type larger size fans. The CLS LN units cover a nominal cooling capacity range from 41 to 150 kw. CLS ELN : Extra low noise version fitted with greater heat exchange surface area condenser coils, very low speed type fans and a stepless fan speed controller. Furthermore, the ELN version is equipped with a reinforced soundproofing : - mufflers mounted on compressor discharge lines (all sizes), - soundproofing jacket on compressor (sizes 182 to 302), - sound insulation on compressor compartment (sizes 352 to 602). The CLS ELN units cover a nominal cooling capacity range from 41 to 150 kw. CLS HPF : High pressure fan version having same equipment as STD version, except that larger size fans with 80 Pa external static pressure are fitted on this HPF version. The CLS HPF units cover a nominal cooling capacity range from 41 to 145 kw. CLS HT : High temperature version having same equipment as STD version, except that it is fitted with fans allowing unit to operate at high ambient temperatures (up to +48 C). The CLS HT units cover a nominal cooling capacity range from 44 to 155 kw. Reference standards The following applies to all the sizes and versions belonging to the CLS units : Performance test EN Machine Directive CEE 89 / 392 Low Voltage Directive CEE 73/23 (EN ) Electromagnetic Compatibility Directive CEE 89/336 as modified by Directive CEE 92/31 (EN , EN ) Cabinet and structure The unit structure shall be of heavy gauge galvanized steel fastened with non-corrosive screws and bolts. Galvanized steel parts shall be painted with baked on enamel colored white (RAL 9001). Compressors Each unit shall be equipped with 2 Scroll hermetic compressors. Compressors on all models shall be mounted on rubber antivibration pads and have direct on line starting. The compressor motors shall be refrigerant gas cooled, with integral thermistor protection against overloads. The overload protection is automatically reset. The motor terminal boxes shall have IP-54 weather protection. Evaporator Evaporators are of a brazed stainless steel plate type heat exchanger. They are insulated with a closed cell foam material and are fitted with an electric cable resistance to prevent the unit from freezing at a low temperature when the unit is off. Design working pressure shall be 10 bar on the water side and 30 bar on the refrigerant side. Water connections are of a 2 " Victaulic type on each evaporator. Optional inlet and outlet 2" male threaded gas type manifolds can be supplied to ensure single flow and return water connections. Condenser coils The condenser coils shall be seamless copper tubes, arranged in staggered rows, mechanically expanded into corrugated aluminum fins. Condenser coil fans The condenser fans shall be direct drive with aluminum wing contour blades. Each fan will have a painted galvanized steel protection guard. The totally enclosed fan motors shall have IP 54 degree of protection and thermo-contact protection embedded in their windings. Fan controls Each unit can be equipped, as optional, with a stepless fan speed controller, operating on the basis of condensing pressure, to keep fan rpm under control in order to operate at a low ambient temperature (-18 C). This fan speed controller is supplied as standard on the ELN units. However, it is not available on HPF and HT units. Refrigerant circuits All the units are composed of two independent and separate refrigerant circuits. All the components that constitute each circuit are shwon on the functional diagram (see chapter "Refrigerant flow diagram"). Integrated hydraulic module (optional) Units can be supplied with optional integrated hydraulic module composed of water tank and 1 or 2 pumps complete with accessories. Antifreeze heater is supplied as standard in the tank. Units can also be supplied with pump kit only (with 1 or 2 pumps). Page 2

3 Specifications (continued) and control panel The control compartment shall contain an electronic circuit board and a key control panel with display of operating parameters, alarms and stops. Thermal relays and fuses are supplied to protect compressors, fans and pumps from overloading. Control and safety devices Each CLS unit is fitted with the following devices : Safety : Fan thermal protection. Compressor thermal protection. Water differential pressure switch. High pressure switch. Evaporator antifreeze protection. Low pressure switch. Crankcase heater. Control : Evaporator water inlet temperature sensor. Evaporator water outlet temperature sensor. Control Controller display panel Factory-installed accessories and options Coils with hydrophilic coated fins. Coils with vinyl coated fins. Coils with polyurethane coated fins. Copper / Copper coils. LP & HP manometers. Condenser coil guards. Integrated hydraulic module with water tank, antifreeze resistance and 1 or 2 pumps. Pump kit with 1 or 2 pumps. Compressor overload protection kit. Inlet and outlet water connection manifolds. Phase monitor. Stepless fan speed controller (STD and LN versions). Field-installed accessories Water filter. Flow switch. Spring anti-vibration mounts. Remote control kit (On/Off, Cooling). Modbus interface kit. Remote keyboard panel. Chiller sequencer (4 units maximum). Remote control kit (optional) The controller provides information on status of operation, configuration and alarms through a display and LEDs on the front panel. Display It allows mainly to show : - the entering water temperature of the unit in tenths of degrees Celsius with a decimal point, - the alarm code if at least one alarm is active. LEDs 1 - Heating mode display : not used 2 - Cooling mode display 3 - Operating mode selection 4 - Unit On/Off; Alarm restoration 5 - Display 6 - Compressor 2 ON LED (Blink : time delay in progress) If COOLING LED is OFF, the controller is in STANDBY mode. 7 - Electric resistance ON LED 8 - Compressor 1 ON LED (Blink : time delay in progress) 9 - Voltage ON LED 10 - Unit activated alarm LED 11 - Start key and LED - Cooling Page 3

4 Refrigerant Flow Diagram Refrigerant circuits Hydraulic module (optional) 3 A P1 C1 B P1 4 PED D C T1 A C B B A 6 A C A 3 A P1 C2 B P1 D E F 4 PED C T2 L 6 G H I Components (refrigerant circuits) : 1 - Compressors C1, C2 2 - Discharge valve 3 - Muffler (for ELN version only) 4 - Air cooled condenser 5 - PED pressure relief valve 6 - Liquid valve 7 - Filter drier 8 - Sight glass 9 - Expansion valve 10- Plate heat exchanger Components (optional hydraulic module) : A - Shutoff valve B - Pump(s) C - Check valve D - Expansion tank E - Relief valve F - Air vent G - Filling up valve H - Drain valve I - Manometer L - Water tank Safety / Control devices : A - High pressure switch B - Low pressure switch C - Transducer (optional) D - Water differential pressure switch - Pressure tapping and refrigerant charging/discharging points Page 4

5 Operating Limits CLS 182 to 302 Chiller Ambient air CLS Min. Max. Min. Max. Min. Max. Min. Max. Water C +6 to +15 Liquid outlet Brine (for low liquid temp. temperature application) C -8 to +5 Temperature difference K 3 to 7 Flow rate l/h Temperature difference bar 10 Cooling - STD / LN / HPF C Air entering temperature Cooling - ELN C Cooling - HT C External Standard fans Pa 0 static High pressure fans - pressure HPF version Pa 80 Recommended system chilled water volume Nominal supply voltage litres V / 3 Ph / 50 Hz CLS 352 to 602 Chiller Ambient air CLS Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Water C +6 to +15 Liquid outlet Brine (for low liquid temp. temperature application) C -8 to +5 Temperature difference K 3 to 7 Flow rate l/h Max. operating pressure - Water side bar 10 Cooling - STD / LN / HPF C Air entering temperature Cooling - ELN C Cooling - HT C External Standard fans Pa 0 static High pressure fans - pressure HPF version Pa 80 litres V / 3 Ph / 50 Hz Recommended system chilled water volume Nominal supply voltage Page 5

6 Correction Factors Fouling factors EVAPORATOR CONDENSER Fouling factor (m 2. C/kW) Cooling capacity factor input factor Fouling factor (m 2. C/kW) Cooling capacity factor input factor Altitude factors Altitude (m) Cooling capacity factor input factor Ethylene glycol solution correction factors Ethylene glycol percent by weight % Freezing point C Cooling capacity correction factors (1) input correction factors (1) Flow rate correction factors Pressure drop correction factors (2) (1) Factors applicable only for glycol solution leaving temperature >= 7 C. For temperatures < 7 C, refer to table "Low temperature operation correction factors". (2) Factors applicable only for glycol solution leaving temperature > 5 C. For temperatures < 5 C, refer to table "Pressure drop correction factors for low temperature operation". Low temperature operation correction factors Leaving water temperature C Minimum ethylene glycol percent % Cooling capacity correction factors input correction factors Pressure drop correction factors for low temperature operation Ethylene glycol percent by weight Glycol solution leaving temperature ( C) Pressure drop correction factors % % % Page 6

7 Physical Data - CLS STD CLS STD sizes Nominal cooling capacity (1) kw Compressor power input - Cooling kw Maximum power input (2) kw EER Number of refrigerant circuits Total unit capacity steps % 50/100 50/100 50/100 50/ /100 50/100 50/ /100 50/100 Refrigerant Type Charge kg HFC 407 C Compressors Type Scroll Scroll Scroll Scroll Scroll Scroll Scroll Scroll Scroll Evaporators Type Plate Plate Plate Plate Plate Plate Plate Plate Plate Antifreeze heater power input W 2 x 35 2 x 35 2 x 35 2 x 35 2 x 35 2 x 35 2 x 35 2 x 35 2 x 35 Air cooled condensers Total coil face area per coil m Number of rows Fans Number Total air flow m 3 /h input kw Water connection * Type Male gas threaded Inlet diameter inch 2" 2" 2" 2" 2" 2" 2" 2" 2" Outlet diameter inch 2" 2" 2" 2" 2" 2" 2" 2" 2" Dimensions Length mm Width mm Height mm Weight Basic - Shipping / Operating kg 600 / / / / / / / / / pump - Shipping / Operating kg 632 / / / / / / / / / pumps - Shipping / Operating kg 652 / / / / / / / / / 1282 Water tank + 1 pump - Shipping/Operating kg 697 / / / / / / / / / 1772 Water tank + 2 pumps - Shipping/Operating kg 717 / / / / / / / / / 1792 Sound levels Sound power levels db(a) Sound pressure levels at 10 meters (3) db(a) (1) Data based on 7 C leaving chilled water temperature and 35 C ambient air temperature. (2) Maximum power input includes : maximum compressor power input and maximum fan power input. (3) Sound pressure level values refer to ISO standard (*) With optional manifolds. Page 7

8 Physical Data - CLS LN CLS LN sizes Nominal cooling capacity (1) kw Compressor power input - Cooling kw Maximum power input (2) kw EER Number of refrigerant circuits Total unit capacity steps % 50/100 50/100 50/100 50/ /100 50/100 50/ /100 50/100 Refrigerant Type Charge kg HFC 407C Compressors Type Scroll Scroll Scroll Scroll Scroll Scroll Scroll Scroll Scroll Evaporators Type Plate Plate Plate Plate Plate Plate Plate Plate Plate Antifreeze heater power input W 2 x 35 2 x 35 2 x 35 2 x 35 2 x 35 2 x 35 2 x 35 2 x 35 2 x 35 Air cooled condensers Total coil face area per coil m Number of rows Fans Number Total air flow m 3 /h input kw Water connection * Type Male gas threaded Inlet diameter inch 2" 2" 2" 2" 2" 2" 2" 2" 2" Outlet diameter inch 2" 2" 2" 2" 2" 2" 2" 2" 2" Dimensions Length mm Width mm Height mm Weight Basic - Shipping / Operating kg 600 / / / / / / / / / pump - Shipping / Operating kg 632 / / / / / / / / / pumps - Shipping / Operating kg 652 / / / / / / / / / 1282 Water tank + 1 pump - Shipping/Operating kg 697 / / / / / / / / / 1772 Water tank + 2 pumps - Shipping/Operating kg 717 / / / / / / / / / 1792 Sound levels Sound power levels db(a) Sound pressure levels at 10 meters (3) db(a) (1) Data based on 7 C leaving chilled water temperature and 35 C ambient air temperature. (2) Maximum power input includes : maximum compressor power input and maximum fan power input. (3) Sound pressure level values refer to ISO standard (*) With optional manifolds. Page 8

9 Physical Data - CLS ELN CLS ELN sizes Nominal cooling capacity (1) kw Compressor power input - Cooling kw Maximum power input (2) kw EER Number of refrigerant circuits Total unit capacity steps % 50/100 50/100 50/100 50/ /100 50/100 50/ /100 50/100 Refrigerant Type Charge kg HFC 407C Compressors Type Scroll Scroll Scroll Scroll Scroll Scroll Scroll Scroll Scroll Evaporators Type Plate Plate Plate Plate Plate Plate Plate Plate Plate Antifreeze heater power input W 2 x 35 2 x 35 2 x 35 2 x 35 2 x 35 2 x 35 2 x 35 2 x 35 2 x 35 Air cooled condensers Total coil face area per coil m Number of rows Fans Number Total air flow m 3 /h input kw Water connection * Type Male gas threaded Inlet diameter inch 2" 2" 2" 2" 2" 2" 2" 2" 2" Outlet diameter inch 2" 2" 2" 2" 2" 2" 2" 2" 2" Dimensions Length mm Width mm Height mm Weight Basic - Shipping / Operating kg 642 / / / / / / / / / pump - Shipping / Operating kg 674 / / / / / / / / / pumps - Shipping / Operating kg 694 / / / / / / / / / 1302 Water tank + 1 pump - Shipping/Operating kg 739 / / / / / / / / / 1792 Water tank + 2 pumps - Shipping/Operating kg 759 / / / / / / / / / 1812 Sound levels Sound power levels db(a) Sound pressure levels at 10 meters (3) db(a) (1) Data based on 7 C leaving chilled water temperature and 35 C ambient air temperature. (2) Maximum power input includes : maximum compressor power input and maximum fan power input. (3) Sound pressure level values refer to ISO standard (*) With optional manifolds. Page 9

10 Physical Data - CLS HPF CLS HPF sizes Nominal cooling capacity (1) kw Compressor power input - Cooling kw Maximum power input (2) kw EER Number of refrigerant circuits Total unit capacity steps % 50/100 50/100 50/100 50/ /100 50/100 50/ /100 50/100 Refrigerant Type Charge kg HFC 407C Compressors Type Scroll Scroll Scroll Scroll Scroll Scroll Scroll Scroll Scroll Evaporators Type Plate Plate Plate Plate Plate Plate Plate Plate Plate Antifreeze heater power input W 2 x 35 2 x 35 2 x 35 2 x 35 2 x 35 2 x 35 2 x 35 2 x 35 2 x 35 Air cooled condensers Total coil face area per coil m Number of rows Fans Number Total air flow m 3 /h input kw Water connection * Type Male gas threaded Inlet diameter inch 2" 2" 2" 2" 2" 2" 2" 2" 2" Outlet diameter inch 2" 2" 2" 2" 2" 2" 2" 2" 2" Dimensions Length mm Width mm Height mm Weight Basic - Shipping / Operating kg 600 / / / / / / / / / pump - Shipping / Operating kg 632 / / / / / / / / / pumps - Shipping / Operating kg 652 / / / / / / / / / 1282 Water tank + 1 pump - Shipping/Operating kg 697 / / / / / / / / / 1772 Water tank + 2 pumps - Shipping/Operating kg 717 / / / / / / / / / 1792 Sound levels Sound power levels db(a) Sound pressure levels at 10 meters (3) db(a) (1) Data based on 7 C leaving chilled water temperature and 35 C ambient air temperature. (2) Maximum power input includes : maximum compressor power input and maximum fan power input. (3) Sound pressure level values refer to ISO standard (*) With optional manifolds. Page 10

11 Physical Data - CLS HT CLS HT sizes Nominal cooling capacity (1) kw Compressor power input - Cooling kw Maximum power input (2) kw EER Number of refrigerant circuits Total unit capacity steps % 50/100 50/100 50/100 50/ /100 50/100 50/ /100 50/100 Refrigerant Type Charge kg HFC 407C Compressors Type Scroll Scroll Scroll Scroll Scroll Scroll Scroll Scroll Scroll Evaporators Type Plate Plate Plate Plate Plate Plate Plate Plate Plate Antifreeze heater power input W 2 x 35 2 x 35 2 x 35 2 x 35 2 x 35 2 x 35 2 x 35 2 x 35 2 x 35 Air cooled condensers Total coil face area per coil m Number of rows Fans Number Total air flow m 3 /h input kw Water connection * Type Male gas threaded Inlet diameter inch 2" 2" 2" 2" 2" 2" 2" 2" 2" Outlet diameter inch 2" 2" 2" 2" 2" 2" 2" 2" 2" Dimensions Length mm Width mm Height mm Weight Basic - Shipping / Operating kg 600 / / / / / / / / / pump - Shipping / Operating kg 632 / / / / / / / / / pumps - Shipping / Operating kg 652 / / / / / / / / / 1282 Water tank + 1 pump - Shipping/Operating kg 697 / / / / / / / / / 1772 Water tank + 2 pumps - Shipping/Operating kg 717 / / / / / / / / / 1792 Sound levels Sound power levels db(a) Sound pressure levels at 10 meters (3) db(a) (1) Data based on 7 C leaving chilled water temperature and 35 C ambient air temperature. (2) Maximum power input includes : maximum compressor power input and maximum fan power input. (3) Sound pressure level values refer to ISO standard (*) With optional manifolds. Page 11

12 Electrical Data 400 V / 3 Ph / 50 Hz CLS models input at nominal conditions per compressor Current at nominal conditions per compressor (A) input at max. conditions per compressor Current at max. conditions per compressor FLA (A) Start up current LRA (A) factor at nominal conditions Crankcase 230 V/1Ø (W) Unit fuse (A) Cable section (mm 2 ) Circuit 1 Circuit 1 Circuit 1 Circuit 1 Circuit 1 Circuit 1 Circuit 1 Circuit Circuit 2 Circuit 2 Circuit 2 Circuit 2 Circuit 2 Circuit 2 Circuit 2 Circuit Circuit Circuit Page 12

13 Electrical Data (continued) 400 V / 3 Ph / 50 Hz CLS STD models Nominal current input A Maximum current input A Nominal power input kw Maximum power input kw Starting current (LRA) A CLS LN / ELN models Nominal current input A Maximum current input A Nominal power input kw Maximum power input kw Starting current (LRA) A CLS HPF / HT models Nominal current input A Maximum current input A Nominal power input kw Maximum power input kw Starting current (LRA) A CLS STD models with pump Nominal current input A Maximum current input A Nominal power input kw Maximum power input kw Starting current (LRA) A CLS LN / ELN with pump Nominal current input A Maximum current input A Nominal power input kw Maximum power input kw Starting current (LRA) A CLS HPF / HT with pump Nominal current input A Maximum current input A Nominal power input kw Maximum power input kw Starting current (LRA) A Pump(s) CLS models Units with 1 pump Units with 2 pumps kw A kw A x x x x x x x x x x x x x x x x x x 4.9 Page 13

14 Sound Levels Sound power levels Lw-dB(A) CLS STD sizes STD STD STD STD STD STD STD STD STD CLS LN sizes Frequency (Hz) Lw global db(a) 182 LN LN LN LN LN LN LN LN LN CLS ELN sizes Frequency (Hz) Lw global db(a) 182 ELN ELN ELN ELN ELN ELN ELN ELN ELN CLS HPF/HT sizes Frequency (Hz) Frequency (Hz) Lw global db(a) Lw global db(a) Sound pressure levels Lp-dB(A) CLS STD sizes STD STD STD STD STD STD STD STD STD Note : Sound pressure levels are given at 10 meters according to ISO CLS LN sizes Frequency (Hz) Lw global db(a) 182 LN LN LN LN LN LN LN LN LN Note : Sound pressure levels are given at 10 meters according to ISO CLS ELN sizes Frequency (Hz) Lw global db(a) 182 ELN ELN ELN ELN ELN ELN ELN ELN ELN Note : Sound pressure levels are given at 10 meters according to ISO CLS HPF/HT sizes Frequency (Hz) Frequency (Hz) Lw global db(a) Lw global db(a) Note : Sound pressure levels are given at 10 meters according to ISO Page 14

15 Cooling Capacities - CLS STD / LN / HPF CLS models Notes : LWT ( C) Ambient air temperature ( C) LWT : Leaving water temperature. - input values are given for compressors only Page 15

16 Cooling Capacities - CLS ELN CLS models 182 ELN 202 ELN 242 ELN 302 ELN 352 ELN 402 ELN 502 ELN 552 ELN 602 ELN Notes : LWT ( C) Ambient air temperature ( C) LWT : Leaving water temperature. - input values are given for compressors only Page 16

17 Cooling Capacities - CLS HT CLS models 182 HT 202 HT 242 HT 302 HT 352 HT 402 HT 502 HT 552 HT 602 HT Notes : LWT ( C) Ambient air temperature ( C) LWT : Leaving water temperature. - input values are given for compressors only Page 17

18 Water Pressure Drop Curves kpa x 1000 (l/h) 1 Size Size Size Size Size Size Size Size Size 602 Page 18

19 Integrated Hydraulic Module Data (optional) kpa 100 CLS CLS 182 CLS 302 CLS 242 CLS 352 CLS CLS l/h CLS sizes Water tank volume (all versions) litres Expansion tank volume (all versions) litres Antifreeze electric heater kw Page 19

20 Dimensions Models CLS 182 to 302 STD/LN/ELN/HPF/HT 35 mm only for transport Cable entry VIEW A 2" male Lifting point Lifting point (+35 mm only for transport) VIEW B 368 VIEW C Models Versions Dimensions A (mm) Dimensions B (mm) Dimensions C (mm) Number of fans Standard CLS 182 LN/HPF/HT ELN Standard CLS 202 LN/HPF/HT ELN Standard CLS 242 LN/HPF/HT ELN Standard CLS 302 LN/HPF/HT ELN Note : For units without hydraulic module, the water connections are done on the optional 2" male threaded gas type manifolds located inside the unit. Page 20

21 Dimensions (continued) Models CLS 352 to 602 STD/LN/ELN/HPF/HT 35 mm only for transport Cable entry Lifting point Lifting point VIEW A " male (+35 mm only for transport) VIEW B 368 VIEW C Models Versions Dimensions A (mm) Dimensions B (mm) Dimensions C (mm) Number of fans CLS 352 & 402 CLS 502 to 602 Standard LN/HPF/HT ELN Standard LN/HPF/HT ELN Note : For units without hydraulic module, the water connections are done on the optional 2" male threaded gas type manifolds located inside the unit. Page 21

22 Space Requirements Single unit applications 3000 mm 1000 mm 1500 mm 1000 mm 1000 mm VIEW A Multi units applications A1 WALL A A2 1.5 m WALL D WALL B A1 WALL A A2 A3 2.0 m 1.5 m WALL D WALL B 1.0 m 1.0 m WALL C WALL C ARRANGEMENT 1 ARRANGEMENT 2 LOUVRED A & C SOLID B & D SOLID A & B SOLID C & D SOLID A & C LOUVRED B & D LOUVRED A & B SOLID C & D LOUVRED A & D SOLID B & C A1 A2 A3 A1 A2 A3 A1 A2 A3 A1 A2 A3 A1 A2 A3 ARRANGEMENT ARRANGEMENT Note : No more than one wall can be higher than the unit. The area enclosed by the wall must be kept clear of all obstructions that would impede air flow to the unit. Page 22

23 Page 23 Notes

24 As part of our ongoing product improvement programme, our products are subject to change without prior notice. Non contractual photos. Wesper 42 cours Jean-Jaurès Pons FRANCE : : / (Export Department)